Hydraulic lift.



No. 763,720- I PATENTED JUNE 28, 1904. R. H. CAMPBELL.

HYDRAULIC LIFT.

APPLICATION FILED D20. 12, 1903.

N0 MODEL.

Witnessex- V Inventor No, 763,720. Patented June 28, 1904.

UNITED STATES PATENT OFFICE.

REMEMBRANCE H. CAMPBELL, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TO HARRON, RICKARD & MoCONE, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

HYDRAULIC LIFT.

SPECIFICATION forming part of Letters Patent No. 763,720, dated June 28, 1904.

Application filed December 12, 1903. Serial No. 184.850. iNo model.)

To whom it y Con/067"": consequent leakage and fracture of the parts. Be it known that I, REMEMBRANQE H.CAMP- Furthermore, it has been customary to make BELL, a citizen of the United States, residing the throat-section of one solid piece of metal, in the city and county of San Francisco and which after a certain period of use and wear 5 State ofCalifornia,have inventednew and usehas to be discarded. The amount of metal ful Improvements in Hydraulic Lifts, of which thrown away at such times is considerable and the following is a specification. the expense and other inconvenience of re- My invention relates to an improved appaplacing entire new sections become quite burratusfor use in placer-mining, and pertains densome. My invention contemplates relief 55 IO particularly to means employing a hydraulic in both these directions. Instead of bolting jet for lifting gravel, tailings, and the like 'the several sections together the sections are above their original bed and depositing them' without end flanges and are placed loose end on a higher level. to end, the seam between any two sections be- The object of my invention is to provide a ing closed by a suitable rubber packing-band 6O hydraulic elevator in which individual parts 10 and the whole incased by the longitudithat are subject to most wear can be easily renallyextending wood staves 9. The lower newed without great difficulty or expense, to end of the base-section is provided with an distribute and relieve strain on the several annular flange-socket 11, except in that part parts, and to facilitate the delivery of the below opening 5, as a seat for one end of the 5 2o gravel, water, and other wastematerial to the staves. The upper throat-section 8 is proelevator-jet. vided with an annular flange 12 intermediate It consists of the partsand the construction of its ends to form a seat for the upper ends and combination of parts, as hereinafter more of the staves, the parts being rigidly united fully described, having reference to the ac- :by means of the rods 13, extending longitu- 7 companying drawings, in whichdinally of the sections between flanges 11 and Figure 1 is a vertical central section of my 12, and by the hoops 14. The latter are prefapparatus. Fig. 2 is a transverse section on erably disposed opposite the joints of the inline 3 3 Fig. 1. l terior sections. 5 That part. of lower throat- A represents the uplift-pipe, 2 the receiver section 6 above opening 5 has a segmental 75 3 or base, and 3 the nozzle, through which a jet flange-socket portion 14:, similar to flange 11 of Water is delivered under a high head to lift and for a similar purpose. The adjacent ends the sand, gravel, boulders, and waste water of the several sections are provided with delivered by sluice i through an openin'g5 to peripheral annular grooves to accommodate the interior of the receiver. lnterposed bethe packing-bands 10, so that when the latter 3O tween the uplift and the receiver is the conare in position they will not project above the tracted throat portion of the elevator, comsurface of the sections, but will allow the posed of the abutting sections 6 7 8 and the staves to fit close against the sections, as they outer wooden stave-casing 9. are intended to do. This loose sectional for- In ordinary elevator construction it is usual mation of the lower portion of the apparatus 4 to provide the several sections of the base, where strain and concussion are greatest afthroat, and uplift with abutting end flanges fords a certain amount of elasticity and disand to unite the individual elements by means tributesthe strain and vibration and practiof bolts and nuts. The objection to this concally obviates danger of fracture. struction is the weight and inflexibility of the If desired, the uplift may be formed in sec- 9 apparatus and its inability to adjust itself to tions, also incased in wood, as shown. shock and strain, resulting in vibration and Provision for economical renewal of parts most subject to wear is made by furnishing the lowermost throat-section 6 with a removable lining 15, of manganese steel or other suitable hard durable substance. This throatliner is of substantially the same length as section 6 and is held in place by means of the abutment-s afforded by the contiguous ends of the base and section 7 Section 6 is divided longitudinally into two complementary sections to permit of the entry of the liner and is of substantially uniform interior diameter throughout its length, but is of less thickness than the adjacent ends of the base and section 7 for the purpose of providing the abutments ust mentioned. The liner 1s cylindrical, and its inner surface converges from each end toward the center to form the 0011-" traeted throat-passage common in all elevators. The interiors of the base and of the superposed section 7 are in continuation of the corresponding opposite inclines of the liner. Naturally this contracted part of the apparatus is subjected to tremendous strain and abrasion; but by having a removable wearing member of very hard material, like manganese steel, and this member supported by the outer casing-section it may be worn down very thin without any danger to the apparatus or the workmen. Under the old style of elevator these throat portions beingin one piece it Was not safe to wear them beyond a certain pointforfear of their bursting. Strain and shock are further relieved by the interposition of a sheet of rubber or like packing, as 16, between the liner and its incasing section 6.

Under my present construction the sections 6 7 8 may be of ordinary cast-iron.

The nozzle-tip is surrounded by a protective and guide collar 17, fitting the walls of the receiver and having a downwardly-inclined portion 18 toward opening 5 to form a seat for the sluice-plate 4, the portion of the collar Within the receiver being inclined radially and upward, so that the feed of gravel, rocks, waste water, &c., vill always tend inward toward the jet. The material and waste water to be lifted are thus delivered directly into the path of the jet, and abrasion of the nozzle is thereby greatly reduced, while there is no opportunity for any material to pack around the nozzle in the bottom of the receiver. Practically the whole interior of the receiver is within the active zone of the jet.

Having thus described my invention, What I claim, and desire to secure by Letters Patcut, is

1. In a hydraulic elevator, the combination of a series of loosely-arranged alined metal sections provided with peripheral annular grooves adjacent to their ends, packing-bands in said grooves and not projecting beyond the aesnao surface of the sections, an exterior sectional wood casing for said sections, certain of said sections provided with annular peripheral flanges and tie-rods extending between said flanges to bind the parts together.

2. In a hydraulic elevator, the combination with the uplift of a series of loosely-arranged alined throat-sections having peripheral annular grooves at their ends, packing-bands contained in said grooves and not projecting beyond the surface of said sections, some of said sections having peripheral integral annular flanges, an outer sectional wooden casing between said flanges and embracing the intervening sections, and means engaging the flanges for uniting the several parts.

3. In a hydraulic elevator, the combination of an uplift-pipe, a receiver-section having a side opening, a nozzle and a throat portion intermediate of the uplift and receiver and comprising a series of loosely-arranged alined sections, a removable throat-liner, an exterior flexible casing for said sections, and means for bringing the several parts rigidly together.

at. In a hydraulic elevator, the combination with the uplift, of a receiver-section therefor, a nozzle, said receiver having a side opening, a sluice-infeed, and a collar surrounding the nozzle and engaging the sides of the receiver, and adapted to direct the material into the path of the jet, said collar having a portion adjacent the receiver-opening inclined downwardly relative to the rest of the collar and providing a seat for the end of said sluice.

5. In a hydraulic elevator, the combination of an uplift, a receiver-section, a longitudinally-divided throat-section, a removable liner for said throat-section, and a cushion between the adjacent surfaces of the section and lining.

6. In a hydraulic elevator, the combination of an uplift, a receiver-section, a throat portion intermediate of the receiver and uplift, a removable liner for said throat portion, and a packing between the adjacent surfaces of the throat and lining.

7 In a hydraulic elevator, the combination of an uplift, a receiver-section, a throat portion intermediate of the receiver and uplift, a removable liner for said throat portion, and a rubber packing interposed between the liner and its surrounding throat portion.

8. In a hydraulic elevator, the combination with an uplift and a receiver-section, of a composite throat portion of metal and wood intermediate of the uplift and receiver, and a removable liner of hard resistant material for said throat portion.

9. In a hydraulic elevator, the combination of a receiver-section, a section axially alined therewith, an intermediate section of greater interior diameter than the abutting ends of either of said other sections, a removable my hand in presence of two subscribing Witliner fitting Within said lnterrnediate section nesses. and abutting against the ad acent ends of said other secti0ns,a yielding packing between the REMEMBRANCE CAMPBELL 5 intermediate section and the liner and means Witnesses:

for holding the several said parts together. S. H. NoURsE,

In testimony whereof I have hereunto set JESSIE C. BRODIE. 

